The unstable part is just compared to other versions of Debian. Every now and then a package dependency breaks, but usually nothing serious and you can still use the system until it is fixed within hours. It is not like the system will constantly crash, it is still linux.
I have used sid for years without any major problems. Usually only on desktop though.
security none existsnt. Aws security tools used to scream at you every time you open the aws console. Solution at the company was to restrict views to those pages so (most) people don’t see the security/vuln reports. To get reports, you’d have to ask cybersec.
Not going to lie, that is hilarious. And forget red flags, you have a whole squadron of semaphores right there.
Maybe not, some immature kids think anything with X in it looks cool. Just look at Musk renaming twitter.